Nut-lock



. UNITED STATES PATENT OFFICE.

LEE ANDERSON, OF PARIS, TEXAS, ASSIGNOR OF THREE-FOURTHS TO THOMAS BROADAND THOMAS F. REILLY, OF SAME PLACE, AND GEORGE MCMUL- LAN, OF FORTSMITH, ARKANSAS.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 419,596, dated January14 1890.

Application filed April 15, 1889. Serial No. 307,281- (No model.)

To aZZ whom it may concern:

Be it known that I, LEE ANDERSON, a citizen of the United States,residing at Paris, in the county of Lamar and State of Texas,

have invented certain new and useful Improvements in Nut-Locks; and I dohereby declare the following to be a full, clear, and

exact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

The invention has relation to nut-locks, and has for its object toproduce a nut-lock which is simple in construction, efficient inoperation, and which can be readily manipulated to release the nutwithout injury to the latter or the lock itself; and the inventionconsists in the construction and novel arrangement of parts, ashereinafter set forth, illustrated in the accompanying drawings, andpointed out in the appended claim.

In the drawings, Figure l is a top view of my improved nut-lock. Fig. 2is a side view of same, and Fig. 3 a detail View of the look.

In the above drawings I have shown the application of my improvednut-lock to a portion of a truss of a bridge, though it will beunderstood that said lock is adapted for use with equal facility for thevarious purposes for which such locks are used.

Referring to the drawings by number, 1 indicates a portion of a truss ofa bridge; 2, the securing-bolt passing therethrough.

3 indicates my improved nut-lock, which, as shown, is constructed asfollows:

7 In constructing the look I employ a narrow piece of steel, and at oneend thereof bend the same into the annular shape shown, forming an eyeor loop 4 of a diameter sufficient to be placed over the threaded end ofthe bolt. The lock near the terminus of its curved portion is bentslightly downward, as shown at 5, for a purpose presently explained. Atthe point 6 the lock is bent to form a rearwardly-projecting straightportion 7, of a length about twice the diameter of the loop portion 4.Said straight portion 7 is bent upwardly at the point 8, then forwardlyto form a straight portion 9, overlapping the portion 7, and terminatingin a curve 10, against which, when the lock is in place,

one edge or corner of the nut is adapted to bear, and at the point wheresaid nut bearsI provide the curve with a notch or notches 11,. for thereception of the edge of the nut to prevent the saine from accidentallyturning.

Instead of the notches 11, a step or shoulder may be formed for theabove purpose.

In applying the lock hereinbefore described the looped portion 4 isplaced over the bolt, and the nut 12 then screwed upon the bolt untilthe point 5 is forced to bite into the plate 1. When the .nut has beenturned home, should one edge thereof not register with one of thenotches 11, said lock is given a partial turn in order to cause thenotch to engage the edge of the nut, whereby the latter is preventedfrom accidentally turning. During this partial revolution of the lockthe straight portion 9 is, by reason of contact with the edge of thenut, caused to spring outwardly, thereby further servingto hold the nutin position.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is

The herein-described nut-lock, consisting of a strip of metal having thelooped portion 4, adapted to embrace. the bolt, and having thedownwardly-bent spring portion or end forming a biting-edgelo, therearwardly-ex- 8o tending straight portion 7, bent upward at the point8' to form a bearing point or edge, which is also adapted, inconjunction with the edge 5, to grip the fish-plate, as described, theforwardly-extending straight spring portion 9 S5 overlapping thestraight portion 10, the inner curved edge of which lies in the path ofthe edge of the nut when the latter is turned upon the bolt, saidportion 10 being adapted to spring laterally when said nut is turned,and V-shaped notches 11 in said curved portion to receive the edges ofthe nut, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

LEE ANDERSON.

Witnesses:

' JoE ALLEN,

CLARENCE G. HANCOCK.

